Chair.



W. J. WHITEHEAD.

CHAIR.

APPLICATION HLED NOV. 25, 1914.

Patented May 9, 1916.

2 SHEETSSHEET I.

- Subewtoz WILLlHM d .wHfTe-Hseo W. J. WH-ITEHEAD.

CHAIR.

APPLICATION FILED Nov. 25. 1914.

Patented May 9,1916.

2 SHEETSSHEET 2.

WILLIAMJWHWEHEAD flttozmw i W L IAM J. wnirnnnan,orsrnrnorrnrn,rarssouni,

e s ate m n Letters Patent. Patent d M 9,1915;

Application filed November 25, 1914. Serial No. 873,888.

To all iohom it o nay concern: j s Be it known that I, WILLIAM J. WHITE-nnan, a citizen of the United States, residing at Springfield, in thecounty of Greene and State of Missouri, have invented certain new anduseful Improvements in Chairs,of which the followingis a specification,reference being had to the accompanying draw- The invention has for itsprimary object to providea chair having the abovenoted generalstructural characteristics which is partlcularly. deslgned for use uponvehicles,

whereby the same may be very easily and quickly'adjusted so as to occupya minimum of space, orjextended sothat the-occupant may recline thereon.

scription and The invention has for another and more specific object toprovide an improved construction of hinge joint which connects theseveral adjustable parts of thechair.

It is another object of my invention to produce an adjustablechairorseat which is" exceedlngly slmple in ts construction, maybemanufactured at small cost, and 1S highly serviceable and convenient inpractical use.

lVith the above tures of construction, combination and arreferred to andmore particularly pointed out in the specification and claims.

For a full understanding of the invention, reference is tobe had to. thefollowing deaccompanying drawing, in which I Figure liis a sideelevation, partly in section illustrating an adjustable chair.c0nstructed in accordance with the preferred seat at opposite sides isprovidedwith inwardly extending hollow bosses 11, and in these bossesthe male hinge members on one end ofa leg rest, indicated at 25, areadapted to be engaged and secured in precisely the same manner'as thatabove described.

embodiment of my invention; Fig. 2 is a section taken on the line*22 of.Fig, 1; and Fig: 3 is a'section taken on the line 33ofFig.1. if

Referring in detail to thedrawing, 5 designates two similar side frameswhich are suitably secured upon the" respective side walls'of thevehicle body. Each ofthese side frames includes a'horizontally disposed.bar 6 and an upwardlyprojecting extension 7 7' at one end of saidhorizontal bar. The I and other objects 1 in view, the 'inventlonconsists in novel fear particular purpose of this frame extension willbe hereinafter fully explained.

The seat of the chair, shown at 8, is provided at opposite sides andadjacent to its forward end with the depending brackets which are formedwith inwardly projectlng hollow;taperingcylindrical bosses 10.

The forward end of the seat 8 is also provided with similar bosses 11.Each of the horizontal portions 6 of the side framesb isprovidedadjacent its forward end with an opening 12 through which athreaded rod 13 extends. Nuts 14 are threaded upon this rod and disposedaboveand below the horizontal bar6. Upon the upper end of the rod 13 themale hinge member 15 is formed,

adapted to extend through an opening 19 provided in'the base ,wall ofthe boss 10.

The annular walls ofthis boss and the ex- 1g tension ,16 are disposed inparallel relation and between the same a bushing or gasket 20,preferably of sheet copper is disposed. Any other suitable frictionmaterial may, however,-, be substituted for this copper sheet. The innerend of the hingebolt 18 is formed'with an enlarged head 21, betweenwhich and the end of the bearing sleeve 17,

washer plate 22 is arranged. A heavy coil spring 23 isdisposed upon thesleeve 17 betweenthis washer plate and the base of the hollow extension16,5saidv springacting to normally force said extension against thefriction sheet 20 and hold said friction sheet tightly against thewallsof the boss 10.. Upon the outer end'of the pivot bolt 18 a nutZ isthreaded for the purpose of securely clamping the parts. together.

As above stated, the forward end of the The detaihconstruction of thishinge joint between the leg rest and the seat will not therefore befurther referred to. The seat 8 is also formedat its rear end and uponopposite sides with the outwardly project chair has formedupon its lowerend and at opposite sides thesolid conically shaped projections 28, eachof which is provided in its outer face with a recess 29. The extension 7on each of the side frames 5 1S provided in its opposite faces with thetapering recesses or seats and 31, which are designed to receive theextensions 26 and 28 on the seat 8 and back 27 respectively of thechair. The projection 26 of the chair seat is formed with a sleeve 32through which the hinge bolt 38 is disposed. The upper end of the chairframe 7 is providedw'ith an opening 34: and the conical projection 28 onthe chair back with "an opening 35. These openings coincide with thebore of the sleeve 32 and through the same said hinge bolt extends. Ahead 36 is formed on the inner end of the bolt 33, between'which and thebase of the hollow'extension 26 on the chair seat the coil spring 37 isarranged.

A sheet of friction metal 38 is disposed between theperipheral face ofthe conical extension 28 of the chair back and the opposed surface ofthe recess 31. A nut 89 is threaded up the outer end of the bolt 33,whereby the several parts may be securely clamped together and heldagainst relative movement. 7

The'free end of the leg rest 25 may be provided with a foot pad,indicated at 40, preferably removably attached to the leg rest andextending outwardly therefrom when the leg rest is not in use. The upperend of the chair back 27 is equipped with a removable and adjustablehead rest 41, which may be mounted and adjusted in any approved manner.This head rest, as well as the chair back, the seat, and the leg rest,are provided with suitable cushions, indicated at 412.

From the above description taken in connection with the accompanyingdrawing, the construction, manner of operation, and several advantagesofmy invention will be clearly understood. When it is desired to adjustthe chair, the hinge bolts 18 and 33 at opposite sidesof the chair areloosened. The nuts 14 are then adjusted upon the rod 13 to move said rodvertically anddispose the seat 8 in the desired inclined position withrespect to the supporting frames 5. The nuts 14 are then adjusted intoclamping adjustment against the frame bar 6 to securely hold the rods 18against further movement. The nuts are then threaded inwardly upon thebolts 18 against the brackets 9 so as to draw the extensions 16 on thehinge members 15 into the hollow bosseslO to tightly clamp and bind themetal friction sheet 20 between the opposed walls thereof. The chairback 27 is now tilted to the desired position. The coil springs 37 havesuflicient tensile strength to be used as an ordinary chair, and

. to thes'eat Sin a'similar manner.

It will thus be seen that I have devised an improved construction ofbinge joint between the several adjustable parts of the chair which willalso securely hold the several parts against relative movement upon thehinge bolts when the nuts are securely tightened thereon. The necessityof providing additional looking or holding means is consequentlyavoided. It will therefore be apparent that my improved chair may bemanufactured at comparatively small cost,

and is also highly durable and reliable in practical use. 1

While I have referred to the chair as particularly designed for use uponvehicles, it

will be understood that the same may. also Li);

readily moved from place to place.

While I have above described the ipreferred form, construction, andarrangement of'the several elements employed, it will be understood thatthe device is,,nevertheless, susceptible of considerable modificationtherein, and I therefore reserve the privilege of resorting to all suchlegitimate changes as may be'fairly embodied within the spirit and scopeof the claimed. 7 e

'What I claim is:

1. A hinge joint of the character deinvention as scribed including afrusto-conical female member and a complementary male member of hollowform, said members, each being axially provided with an opening and themale member having a sleeve projecting inwardly from said opening, abolt loosely disposed through the axial openings of the coupling'membersand provided with ahead on one end, a frusto-conical metal frictionsheet disposed between the contiguous body walls of the couplingmembers, a nut threaded upon the other endof the bolt, and a springarranged within the hollow male member upon the sleeve thereof acting tohold the coupling members in frictional engagement with the frictionsheet I when the nut isloosened.

2. A hinge joint of the character de scribed including a stationary partprovided with tapering recesses in its opposite faces and having a boltreceiving opening, movable parts one of which is provided with a conicalshaped hollow boss for engagement within one of said recesses, theothermovable part being provided with a solid conically shapedprojection for engagement V within the other of said recesses, saidsolid movable part of the joint and cooperating with said bolt to movethe same in one direction when the nut is loosened and hold said bossand projection against casual movement with respect to the stationarypart. V

In testimony whereof I hereunto aflix my signature in the presence oftwo Witnesses.

WILLIAM J. WHITEHEAD. Witnesses:

GEO; T. HINE, J ULIUs SEIFERT.

Copiea of this patent may be obtained for five cents each, by addressingthe Commissioner at Patents,

Washington, D. 0.

